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\begin{equation*}c = \frac{\sqrt{n}}{a^y} \qquad s = c^y \qquad x = \sqrt{y^2 + z^2} \qquad e = mc^2 \qquad d = 2\pi\times r \qquad a = \pi\times r^2 \qquad b = \sqrt{t \over {f^w}}\end{equation*}
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